<https://www.w3.org/TR/css-cascade-3/#cascading-origins>
Created attachment 399229 [details] Patch
This patch modifies the inspector protocol. Please ensure that any frontend changes appropriately use feature checks for new protocol features.
Committed r261669: <https://trac.webkit.org/changeset/261669> All reviewed patches have been landed. Closing bug and clearing flags on attachment 399229 [details].
<rdar://problem/63211028>